LargestMovedPointPerm( perm )
LargestMoverPointPerm
returns the largest point moved by the
permutation perm, i.e., the largest positive integer i such that
i^perm < i
. It will signal an error if perm is trivial
(see also SmallestMovedPointPerm).
gap> LargestMovedPointPerm( (2,3,1) ); 3 gap> LargestMovedPointPerm( (1,2)(1000,1001) ); 1001
GAP 3.4.4